Page 68 - TTTP_3_SB_SE
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5c Between the lines
1 Warm-up
Answer the following questions.
Answer the following questions.
• Have you ever invented a
secret language or other
ways of communicating For thousands
with your friends? What of years,
was it? people have
• Have you seen any films tried to find
in which somebody uses ways to keep
© MM Publications
code language or secret messages
messages? What do you secret.
remember about them? Codes have
helped to
2 Read hide the
meaning of
messages,
A. Listen, read and choose the but what
th
th
th
th
century
Even as early as the 5 century
best title for the text. about BCE, the ancient Greek historian,
Even as early as the 5 century
a Communication in hiding Herodotus, tells the story of a
the actual
ancient times the actual secret message someone sent on
message? a man’s head. They shaved his
b Inventing new codes hair off and tattooed the message
on his head. When his hair grew
c The art of hiding a back, nobody could read the
f h
i
t o
e a
r
g a
T
n
h
di
m e ss destination, shaved his hair off
messageage
message. The man travelled to his
In the 20 century , during World again and revealed the message.
th
War II, the Germans wanted to
hide important documents so they
reduced them to the size and Nowadays, computers have brought
shape of a dot. We call these about many changes in the art of
tiny messages microdots, and hiding a message. Computers can
it is possible to hide them in store huge amounts of information
a full stop or the dot of the in one file. It is possible to
lower-case letters ‘i ’ or ‘j’ . As change some of the information
a result, the Germans managed without anyone noticing. For
to hide their messages in typed example, it is easy to hide a
or printed documents and nobody short music clip or several pages
could read them unless they used of text in a digital photo. To
a microscope. In this text alone, the naked eye, the difference is
there are lots of places where invisible but the right computer
you could hide a microdot. program can make it appear.
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